public static void OnValidationSummaryPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
        {
            RadGridView gridView = dependencyObject as RadGridView;
            bool isEnabled = (bool)e.NewValue;

            if (gridView != null && isEnabled)
            {
                ValidationBehavior behavior = new ValidationBehavior(gridView, isEnabled);
            }
        }
        public static void OnValidationSummaryPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
        {
            RadGridView gridView  = dependencyObject as RadGridView;
            bool        isEnabled = (bool)e.NewValue;

            if (gridView != null && isEnabled)
            {
                ValidationBehavior behavior = new ValidationBehavior(gridView, isEnabled);
            }
        }